Joseph kay caldwell



(No Model.) I

J. K. CALDWELL.

HYDROGARBON BURNER. No. 302,466. Patented July 22, 1884.

"W1 TNESSES INVENTOR 2@J@%M g m w %W5LM I I UNITED STATES" PATENT OFF C JOSEPH KAY CALDWELL, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR J OF ONE-HALE TO CHARLES S. GREENE, OF SAME PLACE.

HYDROCAR'BON-BURNER.

Application filed October 4, 1883.

To all whom it may concern:

Be-it known that I, Josnrn K. CALDWELL,

a citizen of the United States, and a resident of Philadelphia, Pennsylvania, have invented certain Improvements in Hydrocarbon-Burners, of which the following is a specification.

My invention consists of an improvement, fully described hereinafter, in that class of burners for consuming liquid hydrocarbon in 1o which air and steam brought to bear on the liquid cause a gas or vapor, which, when .ig-. nited, produces a flame of large volume and great heat; and the object of my invention is to limit the supply of steam in burners of this class by causing air under pressure to perform the duty of? spraying or atomlzing the hydrocarbon in place of the steam which has been usually employed for this purpose.

.The figure in the accompanying drawing represents my improved hydrocarbon-burner the pipe A, and communicates with a nozzle.

7), within the tube A, near the tapering end of the same, this nozzle being directed toward the orifice of the nozzle a. There is a third pipe, D, communicating with a reservoir cont aining hydrocarbon, and with the main pipe may be regulated.

A through a chest, E, which is attached to the said pipe A, and terminates in a nozzle, d, there being in the interior of the chest a seat for the conical termination of the threaded 0 spindle H, which screws into theehest, and

by the manipulation of which the flow of by drocarbon from the reservoir to the burner In hydrocarbon-burners of the class to wh ich my invention relates the general practice has been torely upon a forcible jet of steam tospray or atomize the limited supply of hydro carbon admitted to the burner, and the con sequence of this has, in many cases, been that too much steam was required for this purpose,

the excess of steam detracting from the vol- SPECIPICATION forming part of Letters Patent No. 302,466, dated July 22, 1884.

(No model.)

ume, heat, and clearness of the flame; hence I use air under pressure to perform the desired duty of spraying or atomizing the hydro carbon, and a supply of steam just sufficient to insure perfect combustion.

I am aware that burners have been constructed in which a jet of steam is caused to induce ailow of oil and air past the steamnozzle; also, that oil has been vaporized by a jet of combined air and steam, and that a mixture of oil 'vapor and steam has been projected into an air-supplying pipe; but in all these cases the steam-jet is the active forcing and vaporizing element, so that it is diliicult, if not impossible, to prevent the objectionable excess of steam above alluded to. Burners have also been devised in which air is blown through a pipe into the combustion-chamber, and oil mixed with said air by introducing it through apipe projecting into the air-pipe and bent forward therein; but in these burners no steam is used, and there is thus a material dif ference between the same and my invention.

. I therefore claim as my invention- 1. As an improvement in burning hydro- .carbon fuel, the method herein described, said method consisting in first vaporizing the hydrocarbon by means of a current of air under pressure, then injecting steam into the mixture of hydrocarbon vapor and air, and finally discharging the mixture of steam, air, and hydrocarbon vapor-into the combustion-chamber of the furnace, all substantially asset forth.

2. The combination, in a hydrocarbon-burner, of the following elements, namely:'a pipe, A, communicating with a supply of air under pressure, and terminating in a nozzle, a, a pipe, D, communicatingwitha reservoir of hydrocarbon, and terminating in a nozzle, (1, projecting into the pipe A, and a pipe, B, communicating with a steam-generator, and terminating in a nozzle, 1), which projects into the pipe A in adyauce of the nozzle (1, as set forthj In witness whereof I have hereunto set my hand in the presence of two subscribing witnesses.

JOSEPH KAY CALDWELL.

XVitnessesr J OHN E. PARKER, HARRY SMITH. 

